Testing of backflow prevention assemblies shall be performed by a registered backflow prevention assembly technician. The costs of tests required in the following subsections shall be borne by the customer.
1. Backflow prevention assemblies shall be tested upon installation and tested and inspected at least annually.
2. Backflow prevention assemblies, which are in place, but have been out of operation for more than three months, shall be tested before being put back into operation. Backflow prevention assemblies used in seasonal applications shall be tested before being put into operation each season.
3. Any backflow prevention assembly which fails a periodic test shall be repaired or replaced. When water service has been terminated for noncompliance, the backflow prevention assembly shall be repaired or replaced prior to the resumption of water service. Backflow prevention assemblies shall be retested by a registered backflow prevention assembly technician immediately after repair or replacement.
4. Des Moines Water Works may require backflow prevention assemblies to be tested at any time in addition to the annual testing requirement.
5. The registered backflow prevention assembly technician shall report the successful test of a backflow prevention assembly to the customer and to Des Moines Water Works within fifteen (15) days of the test.
Des Moines Water Works may require, at the owner’s expense, additional tests of individual backflow prevention assemblies as it shall deem necessary to verify test procedures and results.